<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>数组的使用</title>
</head>

<body>
  <script>
    const arr = ['张三', '李四', '王五']
    console.log(arr.length);
    console.log(arr[1]);
  </script>
</body>

</html>